Lock



March 12, 1929. s, SEGA; 1,705,270

LOCK

Fil ed July 22. 1926 1 VENTOR.

Patented Mar. 12, 1929.

UNITED STATES SAMUEL SEGAL, OF NEW YORK, N. Y., ASSIGNOR TO SEGAL LOCK & HARDWARE 00., I

INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

' LOOK.

Application filed July 22,

This invention relates to a lock of improved construction, and specifically a lock of the cylinder type.

It is an object of the invention to provide a lock in which hand-fitting operation will be reduced to a. minimum, and in which the parts will be relatively few in number and simple in construction,- these parts being provided by automatic machinery and as- 10 sembled into a perfectly functioning lock by relatively unskilled labor, thereby reducing construction costs. i

It is a further object of the invention to provide a lock the mechanism of which may be operated with a minimum of resistance,

and in which any wear may be readily compensated for so that the parts will not jam or grip the key; the parts being prevented from accidental relative movement, and when necessary, being readily disassembled.

Other objects of the invention will in part be obvious and will in part appear hereinafter. 1

The invention accordingly comprises the features of construction, combination of elements and arrangement of parts which will be exemplified in the construction hereinafter set forth, and the scope of the applicationof which will be indicated in the claims.

0 For a fuller understanding of theflnature and objects of the invention reference should be had to the following detailed description taken in connection with the accompanying drawings, in which:

Figure 1 is a sectional view of a cylinder lock embodying one form of construction within the terms of the and Fig. 2 is a rear end view thereof.

present invention cylinder body, which is formed with the usual longitudinally-extending bore, within which the lock-plug 6 is rotatably mounted, movement of the latter in one direction be ing prevented by means of an enlarged head portion 7 seating within a correspondingly enlarged portion of the cylinder bore.

It is here to be understood that the plug is formed with a key slot and carries a series of tumblers mounted. one within each of bores formed in the body of the plug; these tumblers being of such length as to provide a lock permutation and cooperar'f' pins earned by the a In these views the numeral 5 indicates the erator may 1926. Serial No. 124,152.

inder Within bores extending transversely of lts body. Y

Contrary to conventional construction, in

which the plug has its rear end terminating I in substantially the same plane as the rear face of the cylinder, the plug in the present instance is extended materially beyond this plane and is formed with a screw-thread 8,

which begins at a point short of the plane of the rear face of the cylinder, and preferably terminates at a point spaced from the outer end of the plug, the latter being thus provided with a smooth face 9 at this point, which face has a diameter less than the major portion of the plug body and is interrupted by a notch 10, which may, if desired, form a continuation of the key slot.

Adjacent its outer end'the plug is formed With a transversely-extending bore, which intersects the notch 10, and mounted within accommodate the reduced end portion 16 thereof. I

It is obvious that a plug of this nature may be manufacturedby automatic machinery, as may also the collar or washer and the pin. Withthe parts thus provided an op assemble the same by simply inserting the plug into the 'bore of the cylinder until the head 7 of the former seats firmly within the enlarged portion at the outer end of the latter. In such position of the parts the rearend of the plug obviously will extend beyond the rear wall of the cylinder, and at this time the operator may associate the tail-piece 17 with the plug by simply aligning the opening of the former with the transverse bore which accommodates the pin 11, and thereupon inserting the pin to prevent material relative movement of the plug and tail piecei If the latter caused to en plug for locking said nut against movement and anchoring said tail-piece to said plug.

8. A lock, including, in combination, a bored cylinder, a plug within said bore and extending beyond the same, the extended portion of said plug being formed with screw threads, a nut mounted uponsaid screw threads and bearing against the rear face of said cylinder, a tail-piece, and a pm carried by said plug and extending through an opening in said tail-piece to anchor the same to the plug.

9. A look, including, in combination, a

bored cylinder, a plug within said bore and,

extending beyond the same, the extended portion of said plug being formed with screw threads, a nut mounted upon said screw threads and bearing against the rear face of said cylinder, a tail-piece, and a pin carried by said plug and extending through an opening in said tail piece to anchor the same to the plug, said pin engaging said nut to normally lock the same against movement.

10. A lock, including, in combination, a

bored .c linder a 3111 within said bore and a is extending beyond the same, the extended portion of said plug being formed with screw threads, a nut mounted upon said screw threads and bearing against the rear face of'said cylinder, a tail-piece, and a spring-pressed pin associated with said plug and anchoring said tail-piece against material movement with respect thereto, said in bearin a 'ainst saidnut to arevent movement of plug. f

11. A lock, including, in combination, a bored cylinder, a plug within said bore and extending beyond the same, said extended portion beingformed with screw threads, a nut mounted thereon and engaging the rear face of the cylinder to prevent material movement of the plug with respect thereto, and a pin carried by said plug, said nut the same. with respect to the being formed to receive one of the ends of said pin whereby to lock the former with respect to the plug.

12.'A lock, including, in combinatioina bored cylinder, a plug within said bore and extending beyond the same, said extended portion being formed with screw threads, a nut mounted thereon and engaging the rear face of the cylinder to prevent material movement of the plug with respect thereto, and a pin carried by said plug, said nut being formed with a series of recesses engaged by one of the ends of the pin to normally prevent movement of the nut and plug.

13. A look, includin in combination, a

bored cylinder, a plug within said bore and mounted upon said threadsand acting against the rear face of the cylinder to prevent axial movement of said plug withrespect thereto, a tail-piece extending into said notch and formed with an opening in line with said transverse bore, and. a pin extending Within said bore to anchor said tail-piece against material movement with respect to said plug and engaging the nut to lock the same against movement with respect to the latter;

In testimony whereof Iaflix my signaturej SAMUEL SEGAL. 

